When patients have coughing symptoms, it may be upper respiratory tract infection, acute bronchitis or pneumonia, and when yellow nasal discharge occurs, it is considered as acute sinusitis. When the above clinical manifestations occur, it is recommended to improve the blood routine, C-reactive protein, calcitoninogen, virus antibody, mycoplasma antibody, sputum culture, chest X-ray, sinus CT and other related examinations. Yellow nasal discharge is usually a bacterial infection, and clinically there will be an increase in white blood cells, neutrophils, neutrophil percentage, C-reactive protein, and calcitoninogen. When patients are diagnosed with bacterial sinusitis, they need to be treated with antibiotics, such as cefixime, levofloxacin, etc. At the same time, eucalyptus citriodora can be taken orally to promote the outflow of nasal mucus. If the patient is combined with mycoplasma infection, erythromycin, levofloxacin and other related drugs need to be added.